This is amazing:
http://www.youtube.com/watch?v=XBKevuPFrpE

Joe offers some amazing advice to a player who is already very accomplished. I can see why Joe created so many great guitar players. I'm a big fan of Joe's music, but it was amazing to see this other side of him and to see his teaching style at work.

There's no ego here, no showing off. Just constructive honest criticism and advice on how to move forward and expand as a musician. I was blown away at how the "student" could play - what more could he do? But Joe offered a wonderful critique.

Much of what was discussed was way over my head, but one thing I took away from it was that mindlessly practicing scales up and down in different nonmusic patterns "rots the brain" and "nobody is going to pay to listen to you play that.". He suggests writing passages or riffs which exercise the skill or scale being worked on and do that repetetively.

Joe also gives a wonderful demonstration of modes and how they can be used in a musical context.